Науково-дослідна лабораторія "Науки про Землю"

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Browsing Науково-дослідна лабораторія "Науки про Землю" by Author "Horoshkovа, Lidiia"

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    Anthropogenic Impact of the War on the Condition of Surface Waters of the Rivers Kazennyi Torets and Kryvyi Torets Within the City of Druzhkivka
    (2025) Horoshkovа, Lidiia; Menshov, Oleksandr; Nekos, Alla; Korniichuk, Yuliia; Khaduskina, Kateryna
    Purpose. To provide a comprehensive ecological assessment of the surface waters state of the Kryviy Torets and Kazenny Torets rivers in the city of Druzhkivka in order to determine the main anthropogenic factors of influence, in particular the consequences of war. Methods. System analysis, statistical processing methods, analysis of retrospective dynamics, and forecasting of future trends. Results. An analysis of water condition indicators was carried out for the monitoring posts – Kryvyi Torets River and Kazennyi Torets River. Organic pollution (BOD₅ and dissolved oxygen) in both rivers throughout the entire observation period there was a systematic excess of BOD₅ over the MPC. The concentration of dissolved oxygen repeatedly dropped below the standard, which indicates a threat to aquatic biota and disruption of selfpurification processes. Nitrites constantly and significantly exceeded the standard, especially in 2005–2008. Periodic significant maxima of phosphate-ion content were recorded, which indicates eutrophication processes and the inflow of phosphates from detergents and fertilizers. Water mineralization (sulfate and chloride ions) is high, especially in 2006–2008 and 2011–2013. Since 2014, stabilization has been observed, but at a high level. Using the Forecast Sheet resource forecasting carried out, which showed good convergence of forecast and actual values. No positive dynamics in water quality were recorded — in 2024–2025 most indicators exceed the MPC. Conclusions. The rivers Kazennyi Torets and Kryvyi Torets are in a state of persistent organic and chemical pollution. The overall ecological condition remains unsatisfactory, and in 2024–2025 the situation has even worsened. Overall, the war has significantly deepened the ecological problems of these rivers. They require a comprehensive approach to restoration: modernization of treatment facilities, rehabilitation of aquatic ecosystems, and restoration of the monitoring system. Without this, there is a threat of further degradation of the region’s water resources, which will have long-term consequences for the environment and human health.